TGA (Truevision TGA)

The TGA format was originally defined in 1984 by AT&T EPICenter and later became Truevision following a successful buyout. The format is a raster graphics format for use originally with high-end PC graphics cards intended for use in video editing, with the format mainly supporting NTSC and PAL video resolutions.

The format stores images in various levels of color depth, starting at 2-bits-per-pixel (bpp) all the way to 32-bit, where color would occupy 24-bits with the final 8-bits dedicated to the alpha channel. The format of the file is fairly simple compared to other formats of the time, such as BMP and TIFF.